"yum install nfs*"
"yum install portmap"
/etc/exports folder placed below setting in the file
/example (NAS drive) *(rw,sync,no_root_squash,no_all_squash,fsid=0)
Restarted all NFS,nfslock,netfs and portmap services and tried to mount the drive from Ububtu client by using
mount nfs /IPADDRESS/Sharename /localpath